Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 26

Waxing Gibbous 82%

16:08

02:36

01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
13 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:45, Set: 21:08, Transit: 12:57. Moon - Rise: 16:08, Set: 02:36. Civil Dark: 21:55 - 03:58. Nautical Dark: 23:06 - 02:47. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
11
30
28
36
96
29
0
11
38
51
58
39
48

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
26
34
9
0
0
0
0
10
26
35
47

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
5
16
3
13
7
10
0
5
19
20
16
13
14

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
60
3
0
11
38
51
58
9
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
2
9
9
9
1
9
2
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
1
11
39
59
89
92
95
95
86
64
55
25
12

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.8
0.6
0.9
1
0.5
0.3
0.3
0
0

Wind Speed/Direction (mph)

7
7
6
6
6
6
5
7
8
8
7
6
5
7
9
9
14
13
12
12
12
12
11
11

Chance of Frost

Temperature (°C)

20
19
18
17
16
16
18
21
23
25
26
28
28
29
28
26
21
20
17
16
15
14
13
13

Feels Like (°C)

21
20
19
18
17
18
20
22
25
26
29
30
31
32
31
30
21
20
17
15
13
12
11
11

Dew Point (°C)

17
16
15
15
14
14
15
16
17
18
19
19
19
19
18
19
20
18
16
15
14
13
13
12

Relative Humidity (%)

81
82
85
86
86
85
81
75
70
65
62
58
57
56
57
62
93
86
92
95
95
95
96
95

Pressure (mb)

1029
1029
1028
1028
1028
1028
1028
1028
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027

Ozone (du)

315
315
314
312
312
312
313
313
313
314
316
318
319
319
320
318
319
318
319
320
321
323
324
326

Wednesday 27

Waxing Gibbous 89%

17:23

02:46

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:44, Set: 21:09, Transit: 12:57. Moon - Rise: 17:23, Set: 02:46. Civil Dark: 21:57 - 03:57. Nautical Dark: 23:09 - 02:45. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

49
57
74
62
69
69
73
81
75
39
58
51
50
61
71
76
81
86
90
91
90
53
92
81

Low Clouds (% Sky Obscured)

49
57
70
62
62
36
39
37
46
35
35
32
30
11
4
31
22
53
43
50
45
34
50
41

Medium Clouds (% Sky Obscured)

13
15
28
32
37
33
37
40
35
20
37
30
29
32
27
32
31
24
22
14
8
23
32
44

High Clouds (% Sky Obscured)

3
3
19
3
3
22
40
62
56
9
14
26
14
28
52
52
52
43
43
48
52
4
57
26

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
7
6
1
1
0
1
3
1
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
12
12
12
13
14
14
15
15
15
15
16
17
17
17
17
16
16
15
14
13
12
11
11

Chance of Frost

Temperature (°C)

12
12
12
12
12
12
13
13
14
15
15
15
15
15
15
14
14
14
13
12
11
11
11
11

Feels Like (°C)

11
10
10
10
10
10
11
11
12
12
12
12
12
12
11
11
11
10
10
10
9
9
9
9

Dew Point (°C)

11
11
11
11
11
11
11
11
10
10
10
10
9
9
9
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

95
96
95
95
95
93
90
86
76
71
69
69
67
66
66
67
67
68
72
77
79
80
79
79

Pressure (mb)

1028
1028
1028
1028
1028
1028
1029
1029
1029
1030
1030
1030
1030
1029
1029
1029
1028
1028
1028
1028
1028
1028
1027
1027

Ozone (du)

329
330
329
329
329
328
327
327
327
327
326
325
324
325
324
323
324
324
324
324
325
328
328
329

Thursday 28

Waxing Gibbous 95%

18:39

02:57

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 Bad
19 Bad
20 Bad
21 OK
22 OK
23 OK
00 OK

Sun - Rise: 04:43, Set: 21:11, Transit: 12:57. Moon - Rise: 18:39, Set: 02:57. Civil Dark: 21:58 - 03:56. Nautical Dark: 23:11 - 02:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

92
88
72
64
74
58
96
78
95
73
72
56
57
44
49
100
37
50
51
45
43
27
22
19

Low Clouds (% Sky Obscured)

46
39
46
42
44
49
30
29
46
50
35
21
8
13
19
0
13
25
47
27
30
20
10
0

Medium Clouds (% Sky Obscured)

42
42
29
20
20
23
33
27
69
19
9
13
13
2
0
0
0
0
0
15
3
3
3
3

High Clouds (% Sky Obscured)

57
50
14
10
46
2
87
46
49
46
43
8
6
44
49
100
37
50
51
45
40
6
10
17

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

17
12
5
5
8
37
33
19
65
60
20
8
2
4
39
9
2
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
11
11
10
10
13
13
12
12
12
13
14
14
14
12
11
12
11
11
9
8
7
6

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
12
13
15
16
17
18
19
20
20
21
21
20
18
17
16
15
14
13

Feels Like (°C)

9
9
9
9
10
10
11
10
13
13
16
18
19
19
18
19
19
19
17
14
13
12
13
13

Dew Point (°C)

7
7
7
7
7
8
8
8
8
9
10
11
12
12
12
14
14
14
13
12
11
10
10
9

Relative Humidity (%)

78
78
77
77
77
79
76
71
66
62
61
62
61
59
60
65
64
69
72
70
73
74
75
74

Pressure (mb)

1027
1026
1026
1026
1025
1025
1025
1025
1025
1024
1024
1023
1023
1022
1022
1021
1021
1021
1020
1020
1020
1021
1020
1020

Ozone (du)

329
331
331
332
332
333
332
329
331
335
337
339
339
337
336
335
334
334
335
337
341
349
347
345

Friday 29

Waxing Gibbous 98%

19:55

03:11

01 OK
02 OK
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:42, Set: 21:12, Transit: 12:57. Moon - Rise: 19:55, Set: 03:11. Civil Dark: 22:00 - 03:54. Nautical Dark: 23:14 - 02:40. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

33
45
70
77
79
79
86
94
100
100
100
100
100
100
100
100
100
99
87
73
63
63
69
77

Low Clouds (% Sky Obscured)

15
30
43
46
46
49
50
47
47
42
38
33
33
29
22
15
7
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

3
3
3
3
3
3
0
34
65
10
61
93
89
30
76
81
81
85
77
68
59
63
69
77

High Clouds (% Sky Obscured)

17
13
15
11
7
13
45
74
100
100
100
100
100
100
100
99
98
97
78
59
40
35
30
30

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
3
7
6
1
14
8
1
1
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
5
5
5
5
6
7
9
10
11
11
12
12
11
11
10
9
8
9
7
6
5
5
4

Chance of Frost

Temperature (°C)

13
13
13
13
14
15
16
18
19
20
20
21
22
22
23
23
22
22
21
19
18
16
15
15

Feels Like (°C)

13
12
12
11
13
14
16
17
18
18
19
19
20
20
21
22
22
22
20
20
17
15
14
13

Dew Point (°C)

9
9
10
11
13
14
14
15
15
13
14
13
13
13
12
13
14
15
15
14
12
11
12
11

Relative Humidity (%)

75
76
81
89
95
92
87
82
76
66
66
58
55
54
50
53
60
63
69
72
70
69
78
76

Pressure (mb)

1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

341
338
337
335
335
334
333
334
334
333
332
331
332
331
330
329
328
327
328
329
332
333
337
345

Saturday 30

Waxing Gibbous 100%

21:09

03:30

01 Bad
02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:41, Set: 21:13, Transit: 12:57. Moon - Rise: 21:09, Set: 03:30. Civil Dark: 22:01 - 03:53. Nautical Dark: 23:16 - 02:38. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

67
44
40
43
52
55
52
70
63
64
59
53
62
72
85
88
94
100
98
96
95
88
81
74

Low Clouds (% Sky Obscured)

0
0
0
2
5
8
13
19
24
18
11
4
3
1
0
0
0
0
11
22
32
43
54
66

Medium Clouds (% Sky Obscured)

65
24
19
20
24
27
25
25
15
16
18
18
27
37
46
52
59
68
70
76
76
64
53
42

High Clouds (% Sky Obscured)

6
8
11
9
7
5
5
30
25
30
26
21
32
46
63
74
87
100
94
88
81
57
34
14

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
1
0
8
11
13
23
32
32
25
18
7
7
5
6

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
5
5
5
4
4
3
3
3
4
5
6
6
8
9
10
10
9
8
8
8
8
7
6

Chance of Frost

Temperature (°C)

13
12
12
11
11
12
13
15
17
18
19
20
20
20
20
20
19
18
17
16
15
15
14
14

Feels Like (°C)

13
11
11
11
11
12
14
16
17
18
18
18
19
19
19
19
19
19
19
15
15
16
16
16

Dew Point (°C)

10
9
7
6
7
8
9
10
11
11
11
11
12
12
13
13
14
14
15
15
14
14
13
12

Relative Humidity (%)

78
77
73
72
73
77
72
69
67
63
58
56
57
59
62
65
72
79
89
90
92
93
90
87

Pressure (mb)

1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1018
1018
1017
1017
1016
1016
1015
1015
1014
1014
1014
1013
1013
1012

Ozone (du)

349
347
347
350
349
346
344
344
344
343
342
344
345
346
347
348
351
354
357
362
366
371
366
362

Sunday 31

Full Moon 100%

22:16

03:57

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:40, Set: 21:14, Transit: 12:57. Moon - Rise: 22:16, Set: 03:57. Civil Dark: 22:03 - 03:52. Nautical Dark: 23:19 - 02:36. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

83
92
100
99
99
98
91
84
76
81
84
86
87
86
86
83
86
90
82
74
68
77
85
92

Low Clouds (% Sky Obscured)

56
46
36
35
33
32
32
31
28
43
58
73
67
61
56
58
61
63
49
38
24
35
39
48

Medium Clouds (% Sky Obscured)

42
41
44
47
44
41
39
40
42
35
27
20
18
15
13
10
9
10
15
32
43
33
17
0

High Clouds (% Sky Obscured)

43
71
100
99
99
98
70
41
13
9
7
2
28
54
75
73
71
65
53
30
14
28
41
54

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

19
22
24
33
28
12
14
7
1
12
18
24
24
23
19
15
10
4
7
7
3
5
4
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
5
6
6
6
6
7
10
12
12
12
12
12
11
10
10
10
11
10
8
7
7
6

Chance of Frost

Temperature (°C)

14
13
13
13
13
13
14
15
16
18
18
19
19
19
19
20
20
20
20
18
17
15
14
13

Feels Like (°C)

15
13
13
13
12
12
11
12
12
13
13
14
14
17
17
17
18
18
17
17
16
16
15
13

Dew Point (°C)

11
11
11
11
11
11
12
11
12
12
12
12
13
13
13
13
14
14
14
13
12
11
10
10

Relative Humidity (%)

84
87
87
87
87
89
87
79
73
66
66
66
67
65
64
65
66
67
68
71
74
76
76
79

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1014

Ozone (du)

357
354
352
350
352
354
357
355
354
353
356
359
362
358
354
350
347
344
342
342
342
342
342
342

Monday 1

Waning Gibbous 99%

23:11

04:34

Sun - Rise: 04:40, Set: 21:16, Transit: 12:58. Moon - Rise: 23:11, Set: 04:34. Civil Dark: 22:04 - 03:51. Nautical Dark: 23:21 - 02:34. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 26/05/26 01:48:55. Forecast: 26/05/26 to 01/06/26. Timezone: UTC+1.00